zc157: Admin, missing $template_dir

[lat9]

Seeing logs similar to:

[30-Jun-2020 09:16:06 America/New_York] Request URI: /vinos_157/admin/index.php?cmd=display_logs, IP address: ::1
#1 require_once(C:\xampp\htdocs\vinos_157\admin\includes\languages\english\extra_definitions\news_box_manager_menu_name.php) called at [C:\xampp\htdocs\vinos_157\includes\classes\ResourceLoaders\LanguageLoader.php:66]
#2 Zencart\LanguageLoader\LanguageLoader->loadFilesFromDirectory() called at [C:\xampp\htdocs\vinos_157\includes\classes\ResourceLoaders\LanguageLoader.php:44]
#3 Zencart\LanguageLoader\LanguageLoader->loadLanguageExtraDefinitions() called at [C:\xampp\htdocs\vinos_157\includes\classes\ResourceLoaders\LanguageLoader.php:23]
#4 Zencart\LanguageLoader\LanguageLoader->loadLanguageDefines() called at [C:\xampp\htdocs\vinos_157\admin\includes\init_includes\init_languages.php:47]
#5 require_once(C:\xampp\htdocs\vinos_157\admin\includes\init_includes\init_languages.php) called at [C:\xampp\htdocs\vinos_157\includes\autoload_func.php:37]
#6 require(C:\xampp\htdocs\vinos_157\includes\autoload_func.php) called at [C:\xampp\htdocs\vinos_157\admin\includes\application_top.php:37]
#7 require(C:\xampp\htdocs\vinos_157\admin\includes\application_top.php) called at [C:\xampp\htdocs\vinos_157\zc_plugins\DisplayLogs\v3.0.0\admin\display_logs.php:35]
#8 require(C:\xampp\htdocs\vinos_157\zc_plugins\DisplayLogs\v3.0.0\admin\display_logs.php) called at [C:\xampp\htdocs\vinos_157\admin\index.php:23]
--> PHP Notice: Undefined variable: template_dir in C:\xampp\htdocs\vinos_157\admin\includes\languages\english\extra_definitions\news_box_manager_menu_name.php on line 16.

The issue is that in zc157 the admin extra_definitions are now loaded via a LanguageLoader class method, so the $template_dir variable now needs to be declared as a global.